| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.55 |
| Score | 0% | 71% |
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
stomach |
|
large intestine |
|
small intestine |
|
mouth |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Which of the following does not filter air as part of the respiratory system?
nasal cavity |
|
trachea |
|
pharynx |
|
epiglottis |
After air enters through the nose, it passes through the nasal cavity which filters, moistens, and warms it. Further filtering takes place in the pharynx, which also helps protect against infection, and then in the trachea which is just past the epiglottis which prevents food from entering the airway.
Which of these layers is found directly below the Earth's crust?
inner core |
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continents |
|
outer core |
|
mantle |
The crust is the Earth's outermost layer and is divided into oceanic and continental types. Oceanic crust is 3 miles (5 km) to 6 miles (10 km) thick and is composed primarily of denser rock. Continental crust is 20 to 30 miles (30 to 50 km) thick and composed primarily of less dense rock. The crust makes up approximately one percent of the Earth's total volume.
A subatomic particle found in the nucleus of an atom. It carries a positive electric charge. This desribes which of the following?
electron |
|
neutron |
|
proton |
|
atom |
A proton is a subatomic particle found in the nucleus of an atom. It carries a positive electric charge.
What part of the brain is responsible for for balance, movement, and muscle coordination?
cerebellum |
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brainstem |
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medulla |
|
cerebrum |
The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.